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Tools · Updated 10 Oct, 11:38 pm IST

DuckDB 2.0 alpha offers measurable speedups, async I/O boosts S3 queries

Image: Hacker News (100+ points)

Why it matters for readers: If you query Parquet files on S3, the new async I/O in DuckDB 2.0 may speed up your queries without code changes.

  • DuckDB 2.0 alpha is available and the full release is expected this fall.1
  • Async I/O in DuckDB 2.0 notably speeds up queries that read Parquet files from AWS S3 without changing SQL.1
  • Benchmarks in the post compare runs on a laptop and against S3 using a 2.2 GB Parquet file (Stack Overflow votes) and show faster runtimes with 2.0.1
  • The author warns that data shape and modeling affect whether you see the speed improvements in practice.1
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